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[null,"Lista de reproducción: "]
[null,null,"https://www.youtube.com/playlist?list=PLrhlyizWZzOERwRMxIIy-BTP-CyXh_K5N"]
[null,"Blog:  "]
[null,null,"https://elsamatilde.blogspot.com/    "]
[null,"Sitio web: "]
[null,null,"http://aplicaexcel.com"]

{"sheet":"PROVEEDORES","index":1,"n_rows":3,"n_cols":8,"rows_kept":3,"cut":false,"hidden":false,"merged":[]}
["BASE DE DATOS DE PROVEEDORES"]
["ID. PROV.","NOMBRE","DIRECCIÓN","LOCALIDAD","TELÉFONO","SALDO ANT.","CONTACTO","PRODUCTOS"]
[1,"JUAN LEDESMA","su domicilio","B",8923456,2540.6,"juan@gmail.com","harina, arroz"]

{"sheet":"LISTAS","index":2,"n_rows":7,"n_cols":2,"rows_kept":7,"cut":false,"hidden":false,"merged":[]}
[null,"LOCALIDAD"]
[null,"A"]
[null,"B"]
[null,"C"]
[null,"D"]
[null,"E"]
[null,"F"]